This is a "Jellyfish" comet! The coma is green and the tails are blue. I worked with a very clear sky and the camera was a Zen Baker-Schmidt 8" F/2 with a STL 6303E for a total of 36 min (LRGB-->5,3,3,15min)of exp.

Last Saturday-evening I was on board of sailing clipper 'Marinus' from 1901. We were on the lake of Veere, an estuary closed from the North Sea. This clipper must have seen comet Holmes passing by several times. We saw the comet without telescope high in the clear sky. With my Nikon D70 and 10,5 mm fish eye I took this picture (1000 iso at f 5,6 and 60 sec. exposure). Pleiades and Auriga are also clearly visible.

Comet 17P Holmes has now sprouted many tails!

And here my update of the comet in comparision of the moon. On Monday the expanding wave had an diameter around 17 arcmin, and is now more than the half of the moon. The other once were photographed at the 3rd 22.30 UTC.It must be a very dark area to get the tail on chip. Nikon 480mm, f4, ASA 800, Bel 160sec, Canon 20D

This is a mosaic of 7 images composed of 8x120second exposures each using an ASA astrograph 8" f/3.8 and a Atik 16HR with Blue filter, to show the tail of the comet, the tail itself changes quite fast with time, and is much bigger than I thought. The second image is a colour composite with radial blur enhancements.

Finally, here is an 8 hour movie of the comet's tail in the blue channel enhanced by rotational blur centered on the nucleus. Taken with the 8" ASA astrograph and Atik 16HR.

This picture shows the comets incredible ion tail. Taken with a 130/780 TMB refractor, Canon 350D camera with 15x5 min exposure at ISO 800. Date 11.04.2007, 21h UT.

Comet 17P/Holmes as the tadpole! Photo details: Canon 20DA + Borg 101 Focal 640mm f/6,4 -Exposures: 4x180 seconds at 1600 ISO. 4x240 seconds at 1600 ISO.

The comet now appears to be half the diameter of the full Moon through binoculars or a telescope. Even with the naked eye it's obvious that the bright star-like center is surrounded by a spherical haze. This mosaic shows the comet, Moon and Mars on the same night and all to scale. The comet image was a 20-second prime focus exposure on a 10" F6.3 SCT, using a Canon Digital Rebel at ISO 1600.